Comments by "Sebastian Nolte" (@sebastiannolte1201) on "Искаженное восприятие"
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" did newton write that law about a vacuum or space? No, he wrote it using the variables encountered in the earth environment. "
This is ridiculous. You seem to have no idea of how science work. Do you think that magnets work in space? Do you think that electricity work in space? Do you think that F=ma only is working inside the atmosphere?
And the main problem with all you people is: What is space for you? What is a vacuum for you? Do you think, that there is a relation between thrust and air pressure, so like "less air = less thrust"? If yes, can you tell me the formula? Or do you think, that there is a threshold, so below the threshold rockets work fine, and above they don't work at all? Then where is the threshold and why? Or do you think, that they just don't work in perfect vacuum? Well, even in space there is not perfect vacuum.
- The air pressure at 35.9km is only 1% comparing to the ground. We can fly that high with balloons. You can see rockets that still accelerate with full power at that altitudes
- the FAI definition for space is 100km. There iyou have 0.00027% air pressure
- The ISS at about 400km loses 50 - 150m of altitude every day because of air drag, so een there you don't have perfect vacuum.
So up to which altitude do rockets work and why?
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All you "Rockets cannot work in space" people have one big problem: We don't have just "atmosphere", where the rockets should fine according to you, and the suddenly "the vacuum of space" where it would not work. Instead the air density just becomes thinner and thinner with the altitude. If your "theory" would be correct, don't you think, that the rocket should work worse in thinner air and would have less thrust?
The air pressure gets lower very quickly, at the beginning, then slower. At 13km (the maximum altitude for passanger planes) you have 18.9% air pressure. Already 35.9km you have only 1% air pressure! Only 0.16% at 50km. And at 100km you have 0.00027%. The ISS is at about 400km - but there is still no perfect vacuum, so it slows down because of the air drag and loses height. The Hubble was put out at 618km, is now at about 550km, and it keeps on losing height - because of the air drag up there.
So please can you tell me: What is the border for a rocket to work, which air pressure is neccessary? Or can you tell me the formula for the relation between thrust and air pressure?
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